An Introduction to the Study of Zoology, Illustrated by the CrayfishAppleton, 1906 - 371 pagini |
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Pagina xii
... ABDOMEN 142 99 99 99 88888 36 . 99 99 37 . ABDOMINAL APPENDAGES • 144 " " " " 38 . CONNECTION BETWEEN THORAX AND 99 99 ABDOMEN • · · 151 39 . 99 " 9 29 40 . 99 99 " " 99 41 . 99 99 99 42 . 99 CEPHALOTHORACIC STERNA AND EN- DOPHRAGMAL ...
... ABDOMEN 142 99 99 99 88888 36 . 99 99 37 . ABDOMINAL APPENDAGES • 144 " " " " 38 . CONNECTION BETWEEN THORAX AND 99 99 ABDOMEN • · · 151 39 . 99 " 9 29 40 . 99 99 " " 99 41 . 99 99 99 42 . 99 CEPHALOTHORACIC STERNA AND EN- DOPHRAGMAL ...
Pagina 18
... on the carapace ; r , rostrum ; t , t ' , the two divisions of the telson ; 1 , eye - stalks ; 2 , antennules ; 3 , antennæ ; 20 , lateral lobes of tail - fin ; XV - XX , somites of the abdomen . is a firm and solid front part , covered by.
... on the carapace ; r , rostrum ; t , t ' , the two divisions of the telson ; 1 , eye - stalks ; 2 , antennules ; 3 , antennæ ; 20 , lateral lobes of tail - fin ; XV - XX , somites of the abdomen . is a firm and solid front part , covered by.
Pagina 19
... abdomen . Now the exoskeleton is not of the same constitution throughout these regions . The abdomen , for example , is composed of six complete hard rings ( fig . 2 , xv − xx ) , and a terminal flap , on the under side of which the ...
... abdomen . Now the exoskeleton is not of the same constitution throughout these regions . The abdomen , for example , is composed of six complete hard rings ( fig . 2 , xv − xx ) , and a terminal flap , on the under side of which the ...
Pagina 20
... abdomen of the female there is a pair of limbs , called swimmerets . In the five anterior rings , these are small and slender ( fig . 3 , B ; 15 , 19 ) ; but those of the sixth ring are very large , and each ends in two broad plates ...
... abdomen of the female there is a pair of limbs , called swimmerets . In the five anterior rings , these are small and slender ( fig . 3 , B ; 15 , 19 ) ; but those of the sixth ring are very large , and each ends in two broad plates ...
Pagina 22
... abdomen , and the hinder pairs of ab- dominal limbs ; walks by means of the four hinder pairs of thoracic limbs ; lays hold of anything to fix itself , or to assist in climbing , by the two chelate anterior pairs of these limbs , which ...
... abdomen , and the hinder pairs of ab- dominal limbs ; walks by means of the four hinder pairs of thoracic limbs ; lays hold of anything to fix itself , or to assist in climbing , by the two chelate anterior pairs of these limbs , which ...
Alte ediții - Afișează-le pe toate
An Introduction to the Study of Zoology, Illustrated by the Crayfish Thomas Henry Huxley Vizualizare completă - 1895 |
An Introduction to the Study of Zoology, Illustrated by the Crayfish Thomas Henry Huxley Vizualizare completă - 1902 |
Termeni și expresii frecvente
abdomen abdominal appendages abdominal somites ambulatory limbs Amurland animals antenna antennule aperture appears artery arthrobranchiæ Astacine Astacus fluviatilis Astacus torrentium attached basal joint blastomeres blood body branchiæ branchial cavity carapace cardiac cavity cephalothorax cervical groove chelate chitinous corpuscles coxopodite cray Crustacea cuticle cuticular division ecdysis Écrevisses edge endopodite English crayfish epiblast epipodite exopodite exoskeleton eye-stalk fact female filaments fluviatilis.-A forceps front ganglia ganglion gastrolith gills give rise green gland hind-gut hinder hypoblast Illustrations inner integument lateral leptodactylus less lobster longitudinal male mid-gut middle modified morphological muscle muscular nerve fibres nobilis noble crayfish nucleated cells nuclei organs ossicle outer pairs plate pleura podobranchiæ portion posterior prawns present region ridge rostrum segments septal lines setæ side somite species spermatozoa spines sternal sternum stomach structure substance surface swimmerets telson tergal tergum terminal thoracic thoracic limbs thoracic somite tissue transverse wall yelk zone